1998 GMC Safari Owner's Manual - Page 365

I Long TripMighway M:intenance Schedule I - When doing frequent trailer towing. - Uses such as found in taxi, police or delivery service. I you do not use your vehicle under any o these conditions, change the f f fluid andfilter every 50,000 miles (83 000 km). 0 Rotate tires. See "Tire Inspection and Rotation" in the Index proper for rotation pattern and additional information. (See footnote +.) 22,500 Miles (37 500 km) 0 Change engine oil and filter (or every 12 months, whichever occurs first). An Emission Control Service. 0 Lubricate chassis components(or every 12 months, whichever occurs first). (See footnote #.) 0 Check readfront axle fluid level and add fluid as needed. Check constant velocity joints and axle seals for leaking. (See footnote**.) 0 Rotate tires. See "Tire Inspection and Rotation" in the Index proper for rotation pattern and additional information. (See footnote +.) I DATE I I ACTUAL MILEAGE I SERVICEDBY: I 30,000 Miles (50 000km) 0 Change engine oil and filter (or every 12 months, whichever occurs first). An Emission Control Service. I DATE MILEAGE I I (Continued) I I 7-31